data_global _chemical_name_mineral 'Sanidine' loop_ _publ_author_name 'Ackermann S' 'Kunz M' 'Armbruster T' 'Schefer J' 'Hanni H' _journal_name_full 'Schweizerische Mineralogische und Petrographische Mitteilungen' _journal_volume 84 _journal_year 2004 _journal_page_first 345 _journal_page_last 354 _publ_section_title ; Cation distribution in a Fe-bearing K-feldspar from Itrongay, Madagascar: A combined neutron- and X-ray single-crystal diffraction study Note: Neutron diffraction data, occupancies taken from simultaneous data ; _database_code_amcsd 0020559 _chemical_compound_source 'Itrongay, Madagascar' _chemical_formula_sum '(K.895 Na.105) Si3.06 Al.9 Fe.04 O8' _cell_length_a 8.5992 _cell_length_b 13.0277 _cell_length_c 7.1926 _cell_angle_alpha 90 _cell_angle_beta 116.056 _cell_angle_gamma 90 _cell_volume 723.877 _exptl_crystal_density_diffrn 2.550 _symmetry_space_group_name_H-M 'C 1 2/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,z' '1/2+x,1/2-y,z' '-x,y,-z' '1/2-x,1/2+y,-z' '-x,-y,-z' '1/2-x,1/2-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv K1M 0.21490 0.50000 0.86215 0.89500 0.27000 Na1M 0.21490 0.50000 0.86215 0.10500 0.27000 SiT1 0.99056 0.18503 0.77617 0.65000 0.01070 AlT1 0.99056 0.18503 0.77617 0.33000 0.01070 FeT1 0.99056 0.18503 0.77617 0.02000 0.01070 SiT2 0.20946 0.38211 0.34437 0.88000 0.01070 AlT2 0.20946 0.38211 0.34437 0.12000 0.01070 O1 0.13760 0.50000 0.28470 1.00000 0.02000 O2 0.31960 0.37380 0.59451 1.00000 0.01800 O3 0.00000 0.14630 0.00000 1.00000 0.02400 O4 0.03516 0.31119 0.25850 1.00000 0.01700 O5 0.17233 0.14676 0.77300 1.00000 0.02000 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 K1M 0.02600 0.03500 0.03200 0.00000 0.01500 0.00000 Na1M 0.02600 0.03500 0.03200 0.00000 0.01500 0.00000 SiT1 0.01140 0.01180 0.00920 0.00220 0.00470 0.00110 AlT1 0.01140 0.01180 0.00920 0.00220 0.00470 0.00110 FeT1 0.01140 0.01180 0.00920 0.00220 0.00470 0.00110 SiT2 0.01100 0.00930 0.01070 0.00020 0.00420 -0.00010 AlT2 0.01100 0.00930 0.01070 0.00020 0.00420 -0.00010 O1 0.01900 0.01200 0.01800 0.00000 0.00200 0.00000 O2 0.02000 0.01800 0.01000 0.00200 0.00300 0.00100 O3 0.02400 0.01900 0.01400 0.00000 0.00900 0.00000 O4 0.01700 0.01500 0.01700 -0.00200 0.00500 -0.00300 O5 0.02200 0.03000 0.02200 0.00400 0.01400 0.00000